Alt-BEAM Archive
Message #07189
To: beam@sgiblab.sgi.com
From: jester96beam@iname.com
Date: Sat, 30 Oct 1999 18:12:55 -0400 (EDT)
Subject: [alt-beam] Re: aquabot
Under a lamp? Hmm...Why not make it into a lamp?
Chris
---- you wrote:
> BEAMers,
>
> I recently came upon a page with a vertically diving bot. I really liked the
> idea. The person proposed to put it in a long glass tube filled with water
> in his living room as a piece of work to admire. I liked that idea too :). I
> propose to build one and I propose to build one in an inverted test tube.
> The solar panel (perhaps some of the very small 0.5 volt, 3mA cells in
> series) will be in the top where it will charge under a lamp or sunshine at
> the surface of the water level. The cap will be below it with a solar
> engine, probably a 1381 type and the pager motor will have a shaft extending
> out the bottom test tube plug with a propeller. I intend to use metal
> washers of equal diameter to the test tube to achieve just above neutral
> bouancy. I want to make it in as small a test tube possible so that I can
> put it in a large graduated cylinder on my desk as an active ornament.
>
> What do you think?
> Greg
>
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7190 Sat, 30 Oct 1999 23:09:27 GMT [alt-beam] Re: Time Capsules beam@sgiblab.sgi.com "Mike Kulesza" >...tantalum capacitors are renowned
>for not lasting a long time, as are the electrolytic caps normally used as
>storage caps.
This fact scares me a bit: does that mean that my walker, using a bicore
euiped with tantalum caps will not last very long? How much time is "not
long" anyway?
______________________________________________________
7191 Sat, 30 Oct 1999 16:27:55 -0700 [alt-beam] Re: aquabot beam@sgiblab.sgi.com Senior Hmm... not a bad idea!!! Many oils do burn though... keep the light a
bit away! I'll have to try that out
Greg Powell wrote:
>
> What if I put distilled water in the graduated cylinder and a thin layer of
> oil on the top. Thus no bacteria and no evaporation or contamination, yet
> light still gets in.
>
> Greg
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